12318715543 has 2 divisors, whose sum is σ = 12318715544. Its totient is φ = 12318715542.

The previous prime is 12318715523. The next prime is 12318715553. The reversal of 12318715543 is 34551781321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12318715543 - 2²⁹ = 11781844631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12318715496 and 12318715505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12318715523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159357771 + 6159357772.

It is an arithmetic number, because the mean of its divisors is an integer number (6159357772).

Almost surely, 2^12318715543 is an apocalyptic number.

12318715543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12318715543 is an equidigital number, since it uses as much as digits as its factorization.

12318715543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 40.

The spelling of 12318715543 in words is "twelve billion, three hundred eighteen million, seven hundred fifteen thousand, five hundred forty-three".